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(DL) Delta Air Lines 2021 On-Time Performance Rating

Date Range:

01-Aug-2025 to 30-Sep-2025

(MIA) Miami International Airport

Miami, FL, US

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
47
77%
Late
5
8%
Very Late
3
5%
Excessive
5
8%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
60
Total Delays ( > 1 min )
22
Codeshares
0
Average Delay (min.)
31.863636363636363
Standard Deviation
35.2
Min
0
Max
121

DL 2021 On-Time Performance Details

Overall Rating
2.8 of 5
Average
Percentage On-Time 78%
Average Delay Time 31.863636363636363 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2.8 shows that this flight has on-time performance characteristics better than 55% of all other flights in the FlightStats database.
On-Time Performance Rating
3.3 of 5
Average
Percentage On-Time 78%
This flight has an on-time performance of 78%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 66% of other flights.
Delay Performance
2.3 of 5
Average
Average Delay Time 31.863636363636363 min
This flight has an average delay of 31.863636363636363 minutes with a standard deviation of 35.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 46% of other flights.